Baked Apple Oatmeal

6 servings
45 min

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Baked Apple Oatmeal is hearty, healthy, and full of warm apple cinnamon flavor.

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We love having ready-to-eat breakfasts in this household. Not only is this baked apple oatmeal a ready-to-eat breakfast, but it is healthy and delicious too.

The flavor is reminiscent of apple pie, which pairs perfectly with the oats. The baked oatmeal, as well as my Banana Bread Baked Oatmeal, can be pre-cut into squares, and frozen, for easy breakfasts. Warm the slices and top with maple syrup for a delicious, nutritious bite!


  • Rolled Old-Fashioned Oats - Old-fashioned oats are the oat of choice for this recipe.
  • Milk - While the milk of choice can vary, milk is important to the structure and texture of this baked oatmeal custard.
  • Egg - An essential component to this baked custard is an egg.
  • Avocado Oil
  • Light Brown Sugar - In addition, the natural sweetness of the apples, light brown sugar is the only sweetener in this recipe.
  • Apples - Peel and chop the apples into bite-sized pieces.
  • Walnuts - Ultimately, the walnuts are optional. I do find, however, that they add a lovely textural element to the final product, in addition to added protein.
  • Spices - Similar to apple pie, this recipe uses ground cinnamon, ground nutmeg, ground ginger, and salt.
  • Baking Powder - The baking powder assists in leavening the oat mixture.


  1. Preheat the oven to 375°F and prep your 8X8-inch baking pan with cooking spray.
  2. Toss the apples in the spices
  3. Mix together the oats with the remaining dry ingredients.
  4. Combine the wet ingredients.
  5. Add the wet ingredients into the oat mixture. Stir in the seasoned apples and walnuts.
  6. Pour the mixture into the prepared pan and bake for 35 to 40 minutes until set.

How to Serve Baked Oatmeal

Enjoy baked oatmeal cold or warm. Warm one serving (square) on a microwave-safe plate for 30 seconds to one minute.

Serving Suggestions:

  • Drizzle with maple syrup
  • Serve with fresh berries or banana slices
  • Top with a dollop of Greek Yogurt
  • Sprinkle with additional chopped nuts
  • Top with a scoop of almond or peanut butter

Recipe Tips and Ingredient Substitutions

  1. My favorite milk to use with oats is oat milk. Naturally, the flavors from the milk work beautifully with the oats. Whole or almond milk works great in this recipe too.
  2. Pre-slice the oatmeal into servings and store them in an airtight container. Simply pull out a portion and microwave for 30 seconds - one minute and enjoy.
  3. The nuts are optional. Chopped walnuts or pecans work lovely with the other ingredients.

Frequently Asked Questions

How should baked oatmeal be stored? Baked oatmeal needs to be refrigerated, as it is custard. Store in an airtight container, preferably proportioned, in the refrigerator for up to 4 days.

Can baked oatmeal be frozen? Yes, you can freeze baked oatmeal. Cut the oatmeal into portioned slices. Place the slices into an airtight container or freezer-safe zip-top bag. Freeze for up to 3 months.

How do you know when baked oatmeal is done baking? Baked oatmeal is technically a baked custard, which means it can be difficult to tell when it should be taken out of the oven. The top should be golden brown, and the mixture will be set which means it will no longer jiggle.

Can quick-cooking oats or steel-cut oats be used as a substitute for the rolled oats? No, I would not substitute them in this recipe. This recipe is designed around the texture of the rolled old-fashioned oats.

This baked apple oatmeal is the perfect breakfast for the everyday. It is easy to make and great for those busy mornings. Serve warm with maple syrup for a delicious, nutritious breakfast.

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Recipe details
  • 6  servings
  • Prep time: 10 Minutes Cook time: 35 Minutes Total time: 45 min
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  • 1 cup apples peeled and chopped small; about 2 small apples
  • 1 teaspoon ground cinnamon
  • 1/4 teaspoon ground ginger
  • 1/8 teaspoon ground nutmeg
  • 2 cups old-fashioned rolled oats
  • 1 teaspoon baking powder
  • 1/2 teaspoon salt
  • 1/3 cup light brown sugar packed
  • 1 3/4 cups oat milk Whole or almond milk works great as well.
  • 1 large egg room temperature
  • 3 tablespoon avocado oil or melted coconut oil
  • 1 teaspoon pure vanilla extract
  • 1/2 cup walnuts chopped; optional

Preheat the oven to 375°F. Grease an 8X8-inch square baking dish with cooking spray.
In a small bowl, toss the apples with the ground cinnamon, nutmeg, and ginger.
In a large bowl, mix together the oats, baking powder, salt, and light brown sugar.
Whisk together the milk, egg, vanilla extract, and avocado oil. Add the wet ingredients into the oat mixture and stir to combine. Stir in the apples and walnuts.
Carefully pour the mixture into the prepared dish. Bake for 35 to 40 minutes, until the top, is golden brown and the mixture is set. Allow the oatmeal to cool slightly before serving.
Store in an airtight container in the refrigerator for up to 4 days, or freeze in slices for up to 3 months.
Katelyn | Sugary Logic
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